1. Ph.D. Candidate, Dept. of Civil Engineering, Case Western Reserve Univ., Cleveland, OH 44106.
2. Research Associate, Dept. of Civil Engineering, Case Western Reserve Univ., Cleveland, OH 44106 (corresponding author).
3. Associate Professor, Dept. of Civil Engineering, Case Western Reserve Univ., Cleveland, OH 44106.
4. Professor, Dept. of Civil Engineering, Case Western Reserve Univ., Cleveland, OH 44106.